Okay people, just to clarify a few things that came up in this episode (with as few spoilers as possible):
First, you all knew that kanji can have multiple readings, right? Well if you didn’t, they do. So anyway, the name “Takanashi” is written using three kanji (you won’t care, but they are “Small”, “Bird”, and “Play”). When you remove that last one, you are left with “Small Bird”, which can be read as “Kotori”.
The episode also contains some references to the Setsubun demon, and to Hanako (under Fictional Characters). Follow the links for Enlightenment! (Or don’t).
Speaking of Hanako, that “-ko” ending is a fairly common way in Japan for girls’ names to end. Likewise, an “-o” ending is often seen in boys’ names. Why are we mentioning this? Watch the episode and find out!